A Fast Algorithm for Sea Surface Target Retrieval Based on Spatial Location Information

摘要

In the use of airborne optoelectronic pod to track sea surface distress targets in harsh sea conditions, the sudden vibration or steering of a rescue helicopter can easily result in the loss of a target. In order to solve the problem of target loss in the process of target tracking, a fast algorithm of sea surface target retrieval based on spatial location information is proposed in this paper. The key idea of the algorithm is to use the method of coordinate transformation to transform the spatial location information corresponding to the previous frame of the target lost and the corresponding spatial location information of the current infrared camera into two corresponding coordinates under the same global coordinate system. According to the coordinates of the two spatial locations, calculate the angle between the camera and the target, and then adjust the angle of the fiber optic gyroscopes camera so that the target quickly return to the image field of view. The algorithm is validated by the ground experiment and the flight experiment, which has practical engineering significance for the rapid search and rescue of the sea surface distress target.